expandable digital to analog convertor

EXPANDABLEDIGITAL TO ANALOG CONVERTOR

Installation Guide

Document Number 512-1090-001Revision G

EDAC Installation Guide 512-1090-001, Revision G

Digital Techniques, Inc.

NOTE

This equipment has been tested and found to comply with the limits for a Class A digital device,pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protectionagainst harmful interference when the equipment is operated in a commercial environment. Thisequipment generates, uses and can radiate frequency energy, and if not installed and used inaccordance with the instruction manual, may cause harmful interference to radio communications.Operation of this equipment in a residential area is likely to cause harmful interference in which casethe user will be required to correct the interference at his own expense.

If this equipment is shipped with filtered phone line, data or power cords, they must be used in serieswith each equipped digital phone port. Failure to do so may jeopardize continued FCC Part 15compliance.

Changes or modifications not expressly approved by Digital Techniques, Inc. could void the user’sauthority to operate the equipment.

NOTICE

The manual described herein is copyrighted, with all rights reserved. Under copyright laws, thismanual may not be copied, in whole or in part, without the written consent of Digital Techniques,Inc. (DTI). The same proprietary and copyright notices must be affixed to any permitted copies aswere affixed to the original manual. The documentation cannot be sold, given or loaned to anotherperson or company without the written consent of DTI.

This product was designed and manufactured by DTI. It was designed to be attached to the NortelMeridian 1, SL-1, SL-100 PBX or Norstar KSU systems, the NEC Electra Professional KSU orNEAX 2000 or 2400 PBX systems, the Lucent Definity PBX, or the Aspect CallCenter only. If youhave any questions, please contact Digital Techniques. This product is not supported or warranted byNortel, NEC, Lucent or Aspect.

Meridian 1, SL-1, SL-100 and Norstar are registered trademarks of Nortel. Electra Professional,NEAX and Dterm are registered trademarks of NEC. Definity is a registered trademark of LucentTechnologies. CallCenter is a registered trademark of Aspect Telecommunications.

To order products or obtain technical information or support if you experience technical difficultieswith this product, please call or write Digital Techniques.

©1998 Digital Techniques, Inc.402 West BethanyAllen, Texas 75013

Telephone: (972) 727-1200Technical Support: (800) 383-2477

FAX: (972) 727-4243

This page intentionally left blank.



REVISION HISTORY

Total number of pages in this publication is 56 pages consisting of the following:

PAGE REVISIONCover GBlank G

Note/Notice GBlank G

Revision History GBlank G

i-iv G1-46 G

REVISION ISSUE DATERevision A (Original Issue) July 16, 1994

Revision B May 25, 1995Revision C April 24, 1996Revision D September 9, 1996Revision E May 21, 1997Revision F February 23, 1998Revision G August 28, 1998

512-1090-001, Revision G EDAC Installation Guide




Digital Techniques, Inc. i

TABLE OF CONTENTS

SECTION/TITLE PAGE

1.0 PRODUCT DESCRIPTION ................................................................................................... 1

1.1 Overview ........................................................................................................................ 11.2 Operation ........................................................................................................................ 2

1.2.1 EDAC Compatibility .......................................................................................... 21.2.2 EDAC Configuration .......................................................................................... 21.2.3 Meridian 1 Selective Recording ......................................................................... 4

1.3 EDAC Product Numbers ................................................................................................ 5

2.0 FUNCTIONAL DESCRIPTION ............................................................................................ 7

2.1 Power Input Receptacle .................................................................................................. 82.2 Single-Unit Power Supplies ........................................................................................... 92.3 Multi-Unit Power Supplies ............................................................................................ 92.4 Indicator Lamps ........................................................................................................... 102.5 RJ-21 (25-Pair) Connector ........................................................................................... 102.6 Cabling ......................................................................................................................... 112.7 Digital Input ................................................................................................................. 112.8 Analog Output .............................................................................................................. 112.9 EDAC Power Distribution Panel .................................................................................. 122.10 EDAC Single Port Cards .............................................................................................. 132.11 EDAC Dual Relay Cards .............................................................................................. 142.12 Base Board ................................................................................................................... 15

3.0 SPECIFICATIONS ............................................................................................................... 17

3.1 Signaling ...................................................................................................................... 173.2 Analog .......................................................................................................................... 173.3 Power Consumption ..................................................................................................... 173.4 Relay ............................................................................................................................ 173.5 Dimensions................................................................................................................... 173.6 Environment .................................................................................................................173.7 Power Supplies ............................................................................................................. 183.8 Cabling ......................................................................................................................... 183.9 Regulatory .................................................................................................................... 20


ii Digital Techniques, Inc.

4.0 INSTALLATION................................................................................................................... 21

4.1 Opening the Base Unit for Card Installation ................................................................ 214.2 Installing Port and Relay Cards ................................................................................... 224.3 Removing Port and Relay Cards .................................................................................. 244.4 Setting DIP Switches ................................................................................................... 25

4.4.1 Nortel Systems ................................................................................................. 254.4.2 NEC Systems ................................................................................................... 274.4.3 Aspect CallCenter ............................................................................................ 284.4.4 Lucent Definity ................................................................................................ 29

4.5 Installing the EDAC Unit ............................................................................................. 314.5.1 Mounting .......................................................................................................... 31

4.5.1.1 Wall Mounting .................................................................................. 314.5.1.2 Rack Mounting with Power Distribution .......................................... 324.5.1.3 Wall Mounting with Power Distribution ........................................... 34

4.5.2 Cross Connecting the Digital Input .................................................................. 354.5.3 Cross Connecting the Analog Output............................................................... 354.5.4 Cross Connecting Relays ................................................................................. 354.5.5 Connecting Power ............................................................................................ 37

4.5.5.1 Wall Mount........................................................................................ 374.5.5.2 Rack Mount/Wall Mount (Distributed Power) .................................. 37

5.0 Testing and Troubleshooting .................................................................................................39

5.1 Testing .......................................................................................................................... 395.2 Troubleshooting ........................................................................................................... 39

5.2.1 Checking for Improperly Aligned or Seated Cards .......................................... 44

6.0 WARRANTY ........................................................................................................................ 45

TABLE OF CONTENTS - Cont’d.

SECTION/TITLE PAGE


Digital Techniques, Inc. iii

LIST OF FIGURES

FIGURE PAGE

1 Expandable Digital to Analog Convertor (EDAC) ............................................................. 1

2 EDAC Configuration Diagram ........................................................................................... 3

3 Front Panel .......................................................................................................................... 7

4 EDAC Power Input Receptacle Pin Diagram ..................................................................... 8

5 Single-Unit Power Supply .................................................................................................. 9

6 Multi-Unit Power Supply ................................................................................................... 9

7 Indicator Lamps ................................................................................................................ 10

8 Power Distribution Panel with Module (Back View)........................................................ 12

9 EDAC Single Port Card .................................................................................................... 13

10 EDAC Dual Relay Card .................................................................................................... 14

11 Base Board ........................................................................................................................ 15

12 Card Installation and Removal ......................................................................................... 23

13 EDAC Configured for Four Ports with Relays ................................................................. 23

14 User Configured DIP Switches (Nortel) ........................................................................... 25

15 User Configured DIP Switches (NEC) ............................................................................. 27

16 User Configured DIP Switches (Aspect) .......................................................................... 28

17 User Configured DIP Switches (Lucent Definity) ............................................................ 29

18 Recommended Wall Mounting ......................................................................................... 31

19 Non-Recommended Wall Mounting ................................................................................. 31

20 Front and Back View of Rack Mount Installation ............................................................ 32

21 Power Distribution Module .............................................................................................. 33

22 DIN Power Cable ..............................................................................................................33

23 Wall Mount Installation with Power Distribution ............................................................. 34

24 Typical Cross Connection Diagram forOne Base Unit with 12 Port Cards ................................................................................... 35


iv Digital Techniques, Inc.

LIST OF TABLES

TABLE PAGE

1 EDAC Compatibility .......................................................................................................... 2

2 EDAC Product Numbers..................................................................................................... 5

3 Power Input Receptacle Pinout ........................................................................................... 8

4 Relay and Port Card Position Assignments ...................................................................... 14

5 Regulatory Compliance .................................................................................................... 20

6 Switch Settings for Nortel SL-1, SL-100 or M-1 Systems ............................................... 26

7 Switch Settings for Nortel Norstar Systems ..................................................................... 26

8 Switch Settings for NEC Systems .................................................................................... 28

9 Switch Settings for Aspect CallCenter ............................................................................. 29

10 Switch Settings for Lucent Definity ................................................................................. 30

11 DIN Power Cable Connections ......................................................................................... 33

12 RJ-21 (25-Pair) Connector Pinout .................................................................................... 36

13 Troubleshooting Guide for Nortel Systems ...................................................................... 40

14 Troubleshooting Guide for NEC Systems ........................................................................ 41

15 Troubleshooting Guide for the Aspect CallCenter ........................................................... 42

16 Troubleshooting Guide for Lucent Definity ..................................................................... 43

Digital Techniques, Inc. 1


1.0 PRODUCT DESCRIPTION

1.1 Overview

The Expandable Digital to Analog Convertor (EDAC), shown in Figure 1, allows users withNortel, Lucent, NEC, or Aspect digital telephone systems to record conversations onto standardanalog recording equipment. In operation, the EDAC passively captures both sides of thetelephone conversation and sends the audio to the recorder only when a call is active.

The EDAC consists of a base unit and plug-in port cards, which allow a single EDAC to handlefrom one to twelve telephone lines. Optional relay cards may also be installed in the base unit forrecording systems which require contact closures to control start/stop recording. DIP switches onthe EDAC provide the flexibility to configure the system for a variety of installations.

The EDAC utilizes a space saving design in a compact case measuring only 8 x 9.5 x 2.25 inches(20 x 24 x 6 cm). The unit can be installed as backroom equipment to prevent unauthorizeddisconnection from the recording equipment. The EDAC case has a flexible design which allowsit to be mounted on a wall or within an equipment rack.

Figure 1. Expandable Digital to Analog Convertor (EDAC)


2 Digital Techniques, Inc.

1.2 Operation

1.2.1 EDAC Compatibility

The EDAC product line supports the digital telephone systems shown in Table 1.

Table 1. EDAC Compatibility

MANUFACTURER PBX TYPE TELEPHONES SUPPORTEDNortel Meridian 1, SL-1, SL-100 M2000, M3000 series

Norstar KSU M7000 series

NEC NEAX 2000, 2400, 7400 Dterm series III , series EElectra Professional KSU Electra Professional Series

Electra EliteAspect Aspect Call Center Aspect TeleSets

Lucent Technologies Definity G3 6400 Series,8400 Series (2-wire),CallMaster III (2-wire)

1.2.2 EDAC Configuration

Figure 2 demonstrates the connectivity between the EDAC and the digital telephone system. TheEDAC bridges across each 2-wire digital telephone line to be recorded and provides acorresponding audio pair out to the recorder.



NOTE

*Loop length is system dependent. See section 3.8 for system specific distances.

Figure 2. EDAC Configuration Diagram

The EDAC monitors the digitized voice information carried on the telephone line and reformatsthe digitized information into standard 600 ohm analog format required by most recordingequipment. The unit captures both sides of a conversation and sends audio to the recorder onlywhen a call is active. This is especially useful with the search features of recorders that look forsilent periods between conversations. Since there is no open microphone, as with simplerecording systems, recording occurs only during active phone conversations. Therefore, officeconversations held between calls are not recorded and remain private. Port and relay cards areuser installed, which allows the system to be configured to meet site requirements, and laterexpanded as the need arises. External AC to DC power supplies support installations in mostparts of the world.

30 Feet

Max

EDAC

2500 Feet

Max

EDAC

Power Supply

Grounded

AC Outlet

Bridge

Tap

Up to 2500 Feet*

1 2 3

4 5 6

7 8 9

# 0 *

Rls

Hold

Speaker

Meridian 1



1.2.3 Meridian 1 Selective Recording

The EDAC product line includes a special application option for the Nortel Meridian 1 PBX. TheEDAC/Selective Recording (EDAC/SR) product allows for selective recording of conversationson a 16-button Meridian 1 digital telephone set (M2216, M2616) by designating a specific rangeof line appearances that will not generate output to the recorder. Specifically, any calls which areactive on buttons 8 through 11, will not generate output to the recording equipment. All otherlines on the digital telephone will activate the recording equipment for both inbound andoutbound calls.

A typical application for the EDAC/SR would be in a call center, where an agent would record allbusiness calls which were answered on incoming ACD lines, but not record personal calls whichwere originated on one of their private lines.

The EDAC/SR is implemented through the use of a base unit and ports cards that are designedspecifically to provide the selective recording feature. The part numbers for all EDAC equipment,including the selective recording application, are provided in Section 1.3.



1.3 EDAC Product Numbers

Due to the numerous combinations of port, relay, and power requirements, EDAC componentsare sold individually. This allows the customer to purchase only the required components. Partnumbers for the EDAC product line are listed below in Table 2.

Table 2. EDAC Product Numbers

ITEM PART NUMBEREDAC Base Unit 500-1090-001

EDAC Port Card (Nortel) 300-3030-001EDAC NE1 Port Card (NEC) 300-3030-002

EDAC Aspect Port Card 300-3030-003

EDAC Base Unit (Lucent) 500-1092-001EDAC Slave Port Card (Lucent) 300-3032-003

EDAC Master Port Card (Lucent) 300-3032-004EDAC/SR Base Unit 500-1094-001

EDAC/SR Slave Port Card 300-3034-001

EDAC/SR Master Port Card 300-3034-002EDAC Dual Relay Card 300-3020-001

EDAC Power Supply, Continental European 500-1120-001EDAC Power Supply, North American 500-1120-002

EDAC Multi-Unit Power Supply, Continental European 500-1120-003

EDAC Multi-Unit Power Supply, North American 500-1120-005EDAC Power Distribution Panel 500-1102-001

EDAC Power Distribution Module 500-1102-002EDAC Power Distribution Cable 450-1102-001

NOTE

Power supplies are desktop style and come with mounting hardware.



2.0 FUNCTIONAL DESCRIPTION

All connectors, controls and indicators are located on the front panel as shown in Figure 3. Thereare two connectors: a standard female 5-pin DIN connector for 5VDC and 12VDC power inputand an RJ-21 (25-pair) male connector for port and recorder interfacing. Four DIP switches allowthe EDAC to be configured for a wide variety of user needs. LEDs indicate power and portactivity.

Figure 3. Front Panel

PowerInput

25-PairConnector

DIPSwitches

IndicatorLamps



PIN SIGNAL1 Common2 Common3 +5VDC4 NC5 +12VDC

13

52

4

2.1 Power Input Receptacle

Table 3 and Figure 4 represent the EDAC power receptacle pins and their respective signals forthe EDAC unit.

Table 3. Power Input Receptacle Pinout

Figure 4. EDAC Power Input Receptacle Pin Diagram

WARNING

Use only Class 2 UL approved power supplies which mate to the pinout defined inTable 3 and Figure 4 (receptacles and input connectors must have mirroredpinouts). DTI strongly recommends the use of the power supplies identified inTable 2 and described in this manual. Use of unapproved power supplies maydamage the EDAC unit and void warranty.



2.2 Single-Unit Power Supplies

A universal switch mode type power supply is used in the 500-1120-001 and 500-1120-002power supplies. This desktop style supply comes with mounting hardware, accepts 90-260VACinput at 47-63Hz and provides regulated outputs of +5VDC @ 2A and +12VDC @ 800mA. AnInternational Electric Code (IEC 320) connector attaches input power to the power supply. The500-1120-002 includes a North American power cord, and the 500-1120-001 includes aContinental European (Schuko) power cord.

Figure 5. Single-Unit Power Supply

2.3 Multi-Unit Power Supplies

A universal switch mode type power supply is used in the 500-1120-003 and 500-1120-005power supplies. This desktop style supply comes with mounting hardware, can power up to fourfully loaded EDACs and is required for rack mount installation. It accepts 85-264VAC input at47-440Hz frequency and supplies +5VDC @ 5A and +12VDC @ 3A. An International ElectricCode (IEC 320) connector attaches input power to the power supply. The 500-1120-005 includesa North American power cord, and the 500-1120-003 includes a Continental European (Schuko)power cord. This supply is also useful when wall mounting multiple EDAC units (see section4.5.1.3 for details).

Figure 6. Multi-Unit Power Supply



2.4 Indicator Lamps

Two green lamps on the front of the unit indicate that the unit is receiving 5V and 12V powerlevels. The other 12 lamps are red and illuminate when the associated telephone set is off-hook.On the Aspect CallCenter, the red LED will illuminate when a call is active on the associatedtelephone. Figure 7 shows positions for each port’s LED. LEDs may illuminate where port cardshave been installed but are not cross-connected since port cards not cross-connected do notreceive idle code. When relay cards are installed, the associated indicator lamp will not be lit.

Figure 7. Indicator Lamps

2.5 RJ-21 (25-Pair) Connector

An RJ-21 (25-pair) male connector provides access to the EDAC’s digital inputs, analog outputsand relay contact pairs.

12V 2 4 6 8 10 12

5V 1 3 5 7 9 11



2.6 Cabling

To attach the EDAC unit to a user-furnished cross-connect block, the user must provide a 25-pair,24 AWG (0.5mm) standard twisted pair wire cable terminated with a female RJ-21 connector onone end.

2.7 Digital Input

The digital input of each port on the EDAC attaches in parallel to one digital telephone port. Theunit may be attached to the digital telephone port anywhere along the loop between the switchand the telephone set. The distance between the line connection and the EDAC unit (tap length)should be no more than 30 feet (9 meters). There should be no line stubs (loose, non-terminatedcables). Loop length limits range from 1,000 feet (305 meters) to 2,500 feet (762 meters)depending on the system. Refer to section 3.8 for more detail.

The EDAC interface adds very minimal loading of the digital telephone line and will not affectnormal telephone operation. The EDAC digital input is cross-connected in parallel with thetelephone’s digital signaling pair.

SPECIAL NOTE FOR EDAC/SR USERS

The EDAC/SR provides selective recording for a 16-button Meridian 1 digitaltelephone set. The EDAC/SR will send audio to the recorder for all lineappearances except buttons 8 through 11. For this application, it is required thatonly single appearance lines be assigned to buttons 8 through 11. AssigningMultiple Appearance Directory Numbers (MADN) or feature keys to buttons inthis range may result in the EDAC/SR not performing properly.

2.8 Analog Output

The analog output of each port on the EDAC is cross-connected to the analog input of standard600 ohm recording or monitoring equipment. The EDAC’s analog output is a 600 ohm pair witha nominal level of -12dBm. Both ends of the conversation are included in the analog output.

The distance between the EDAC’s analog output and the recording equipment may depend on theminimum input level required by the recorder. Typical recording equipment should operate at adistance of up to 2,500 feet (762 meters) from the EDAC with 24 AWG cable. It is recommendedthat the analog loop be as short as possible to reduce the possibility of noise from nearbyelectrical equipment that may cause interference in the recorded audio.



2.9 EDAC Power Distribution Panel

The EDAC Power Distribution Panel (Figure 8) allows up to eight EDAC units to be mounted ona 19 inch rack. Threaded inserts enable the user to mount the EDAC units on the front of thepanel and two multi-unit power supplies on the back of the panel. The Power DistributionModule (refer to Figure 21 for detail) is attached to the panel and allows the output of each powersupply to accommodate up to four EDAC units. Machine screws for EDAC unit and PowerDistribution Panel installation are supplied.

Figure 8. Power Distribution Panel with Module (Back View)

Out

3

Out

4

Out

1

Out

2

In

Out

3

Out

4

Out

1

Out

2

In

B

A



2.10 EDAC Single Port Cards

Single port cards, shown in Figure 9, mount into the SIMM sockets, labeled JP1, JP2, ..., JP12,on the base board (see Figures 16 and 17 more detail). Each port card services one port on thePBX or KSU. These cards provide the main functionality for the EDAC. Prior to installation orremoval of cards, ensure that the unit power cord is disconnected.

Figure 9. EDAC Single Port Card

SPECIAL NOTE FOR LUCENT USERS:

Two different types of port cards are provided for the Lucent Definity PBX: slaveport cards (DTI P/N 300-3032-003) and master port cards (DTI P/N 300-3032-004). Exactly one master port card must be installed in each EDAC Base Unit(DTI P/N 500-1092-001). The remaining eleven slots will be occupied by theslave port cards. Both the master and slave port cards provide digital analogconversion for a single digital telephone.

SPECIAL NOTE FOR EDAC/SR USERS:

Two different types of port cards are provided for the EDAC/Selective Recording(EDAC/SR) application: slave port cards (DTI P/N 300-3034-001) and master portcards (DTI P/N 300-3034-002). Exactly one master port card must be installed ineach EDAC/SR Base Unit (DTI P/N 500-1094-001). The remaining eleven slotswill be occupied by the slave port cards. Both the master and slave port cardsprovide digital analog conversion for a single digital telephone.

JP11 30

370-3030-001 REV

T1

C10

U4

U5

C11C1

U3C5R7R2

U2

C2

C3

U1

R3 C6 R5

R4R14

R13 C15 R12

C12

R1 C8

R8

R6 C4

C7

C14

C13

8

1T2

C9

R10R9R11



2.11 EDAC Dual Relay Cards

EDAC dual relay cards, as illustrated in Figure 10, provide dry contact closures for installationswhere recording equipment is not voice activated and requires start/stop control. Each relay cardhas two relays allowing one relay card to support one or two ports. The quantity of relay cardsneeded is dependent on the number of ports configured. A six-port configuration, for example,requires three relay cards. When the recording device requires relay contacts, the maximumnumber of ports supported per EDAC base unit is eight. When there is no conversation on theline, relay contact pairs are normally open. When there is a conversation on the line, the relaycontact closes to start the recorder. If relay closures are needed, port cards may be installed insockets 1-8 and relay cards in sockets 9-12.

Figure 10. EDAC Dual Relay Card

WARNING

Relay cards are the same size and shape as port cards but should only be installedin sockets JP9 - JP12 on the base unit.

Table 4 shows the port locations on the base board served by each relay card.

Table 4. Relay and Port Card Position Assignments

Relay Card Position JP9 JP10 JP11 JP12

Port Card Positions JP1 & JP2 JP3 & JP4 JP5 & JP6 JP7 & JP8

-JP11 30

K2K1D1 R1 Q1 Q2 D2

C1

R2



2.12 Base Board

The base board (Figure 11) functions as a backplane for the port and relay cards. Single portcards mount in sockets JP1 through JP12. Relay cards mount only in sockets JP9 through JP12. Itis recommended that port cards be mounted in order beginning with JP1. If relay cards are used,they should be mounted beginning with JP9 and should correspond to single port cards asindicated in Table 4.

Figure 11. Base Board

C7C3

D7

D6

D1

D2

D3

D5

D4

C21

C20

C19

C18

C17

C16

C15

C13

C14

C12

C11

C10

R7 R4 R6 R5 R3 R2

C33

C32

C31

C30

C29

C28

C27

C26

C25

C24

C23

C22

L13

L12

L11

L10

L9

L8

L7

L6

L5

L4

L3

L25

L24

L23

L22

L21

L20

L19

L18

L17

L16

L15

L2L14

JP1 JP2 JP3 JP4 JP5 JP6 JP7 JP8 JP9 JP10

C5JP14

JP11 JP12

L1

X1

C4

COM

+5V

+12V

25/50

PORT12/PORT11/PORT10/PORT9/PORT8PORT7PORT6PORT5PORT4PORT3PORT2PORT1GREEN

RED

RED

RED

RED

RED

RED

S1

12

34

126

2550

JP13P1

1

2

3

4

5

RP1 RP2

C1 C6

C2C9C8

EGND

COM +5V +12V

BLANK

RELAYS 1,2 RELAYS 3,4 RELAYS 7,8RELAYS 5,6

- -

BACKFRONT



This page intentionally left blank



3.0 SPECIFICATIONS

3.1 Signaling

Input impedance > 1 M ohms

3.2 Analog

Output impedance 600 ohmsOutput level -12 dBm nominalOutput Voltage 1Vrms

3.3 Power Consumption

Each Port Card +5V at 80mA per port and +12V at 21mA per portEDAC with 12 Cards 8w max.; +5V at 1A max. and +12V at 250mAmax.EDAC + 12 Cards + Power Supply 15w max.; 0.125A at 120VAC max.4 EDACs, each + 12 Cards + Power Supply 70w max.; 0.58A at 120VAC max.

3.4 Relay

Type 2 Form CUL/CSA Rating 1A @ 30VDC

3.5 Dimensions

Housing 8 x 9.5 x 2.25 inches (20.3 x 24.1 x 5.72 cm)Port and Relay Cards 1.3 x 3.5 inches (3.3 X 8.9 cm)Power Distribution Panel 19 x 8.7 x 1.5 inches (48.3 x 22.1 x 3.8 cm); 2.3 pounds (1 kg)Power Distribution Module 4.5 x 3.5 x 1.5 inches (11.4 x 8.9 x 3.8 cm); 0.2 pounds (91 grams)EDAC Unit Weight 4.1 pounds fully loaded (1.9 kg); 3.6 pounds empty (1.6 kg)

3.6 Environment

Temperature 0° to 50° C operatingRelative Humidity 5% to 95% non-condensing



3.7 Power Supplies

Multi-Unit Power Supply Single-Unit Power SupplyPart Number 500-1120-003/-005 Part Number 500-1120-001/-002Type Switch Mode Type Switch ModeInput Rating 85-264VAC 47-440Hz Input Rating 90-260VAC 47-63HzOutput Rating +5VDC @ 5A Output Rating +5VDC @ 2A

+12VDC @ 3A +12VDC @ 800mADimensions 7 x 3.75 x 2.25 inches Dimensions 5.1 x 3.1 x 1.2 inchesCord Length (I/O) 48-72 inches (120-180 cm) Cord Length (I/O) 72 inches (183 cm)Weight Approx. 2 pounds (0.9 kg) Weight Approx. 1 pound (0.5 kg)Efficiency 65% minimum (for more Efficiency 75% typical (for more

detail, see section 3.3) detail, see section 3.3)

DIN Power Cable (see Figure 23) Power CordsPart Number 450-1102-001 North American 72-96 inchesCord Length 48 inches (120 cm) (180-245 cm), black

Cont. European 72-96 inches(Schuko) (180-245 cm), black

3.8 Cabling

Wire Type for Cross Connections 24 AWG (0.5mm) Standard Twisted Wire

Loop Length (NEC) 2,500 feet (762 meters) max. for NEAX PBXs1,000 feet (305 meters) max. for Electra Professional KSUEDAC can bridge at any point along the loop between theswitch and the station set. The EDAC may operate withlonger loops if the bridge point is kept away from eitherend.

Loop Length (Nortel) 1,500 feet (457 meters) max. for Meridian PBXs1,000 feet (305 meters) max. for Norstar KSUEDAC can bridge at any point along the loop between theswitch and the station set.

Loop Length (Aspect) 1,500 feet (457 meters) max. for Aspect CallCenterEDAC can bridge at any point along the loop between theswitch and the station set.

Loop Length (Lucent) 2,000 feet (610 meters) max. for Definity PBXEDAC can bridge at any point along the loop between theswitch and the station set.



Extended Loop Length (Nortel) Up to 2,500 feet (762 meters) max. for MeridianPBXs. Extended distance may be maintained onMeridian PBXs only if the EDAC bridge point is nomore than 1,300 feet (396 meters) from either end.Norstar loop length must not exceed 1,000 feet (305meters).

EDAC to Recorder 2,500 feet (762 meters) max.

EDAC to Bridge (Tap Length) 30 feet (9 meters) max.



3.9 Regulatory

The EDAC meets the requirements of the EMC directive 89/336/EEC (CE Marking) whichinclude the standards for safety, emissions and immunity shown in Table 5.

Table 5. Regulatory Compliance

TEST SPECIFICATION PROCEDURESafety UL 1459

Safety CSA 22.2

Conducted Emissions, Powerline 230V EN 55022:1994 CISPR 22, Class A;FCC Part 15

Radiated Emissions, Electric 230V EN 55022:1994 CISPR 22, Class A;FCC Part 15

Electrostatic Discharge (ESD) Immunity EN 50082-1:1992 IEC 801-2:1991

Radiated Immunity, Electric EN 50082-1:1992 IEC 801-3:1984 (1988)

Electrically Fast Transient (EFT) Immunity EN 50082-1:1992 IEC 801-4:1988 (1990)

• Safety testing was completed in July 1994.

• Emissions testing was completed in August 1994.

• Emissions testing was repeated in August 1996 and December 1997.

• Immunity testing was completed in August 1996.

• Compliance applies to EDAC product revisions as shown below. Note that CEcompatibility applies only to later revisions for base units and port cards.

SAFETYUL 1459 / EMISSIONS IMMUNITY

PART CSA 22.2 EN 55022 EN 50082500-1090-001 Base Unit All revisions All revisions Revisions K or later

only

300-3030-001 Port Card All revisions All revisions Revisions M or lateronly

300-3030-002 NE1 Port Card All revisions All revisions All revisions

300-3030-003 Aspect Port All revisions All revisions All revisionsCard



4.0 INSTALLATION

CAUTION

Digital Techniques recommends that this telecommunications device be installedonly in an access restricted area such as a switch room. Restricted access to theunit should prevent accidental power interruptions.

The EDAC base unit (DTI P/N 500-1090-001, 500-1092-001, 500-1094-001) is shipped withcards packaged separately. Upon receipt of the unit, inspect the condition of the contents fordamage caused during shipping. If damage is detected, contact Digital Techniques prior to setup.If no damage is detected, the unit may be assembled as follows.

WARNING

Do not apply power to the unit unless the housing cover is securely attached. Usestatic sensitive device precautions during handling and installation of components.

4.1 Opening the Base Unit for Card Installation

a. With the power disconnected, open the housing by removing the nut from each side ofthe unit and retain the hardware.

b. Lift the end of the housing cover opposite the connectors just enough to clear thestuds.

c. Slide the cover past the connectors to remove.

d. Observe the base board markings and the SIMM sockets. The port and the relay cardsockets are numbered JP1 through JP12. See Figure 11. For assembly purposes, JP1 isnear the front of the unit, and JP12 is near the rear of the unit.



4.2 Installing Port and Relay Cards

Single port card (DTI P/N 300-3030-001 (Nortel), 300-3030-002 (NEC), or 300-3030-003(Aspect))mounting should begin with slot JP1, and subsequent cards should be mountedsequentially.

For Lucent installations, a master port card (DTI P/N 300-3032-004) should be mounted in slotJP1, and subsequent slave cards (DTI P/N 300-3032-003) should be mounted in subsequent slots.

For EDAC/Selective recording (EDAC/SR) installations, a master port card (DTI P/N 300-3034-002) should be mounted in slot JP1, and subsequent slave cards (DTI P/N 300-3034-001) shouldbe mounted in subsequent slots.

Dual relay cards (DTI P/N 300-3020-001) mount only in slots JP9 through JP12 and should bemounted sequentially beginning with slot JP9. Refer to Figure 12 when installing or removingport or relay cards.

To install, follow the steps below:

a. Orient a card with edge contacts facing down and component side facing toward thefront of the unit.

b. Place the card into the socket with the top angled approximately 60° toward the rearof the unit.

c. Ensure the contacts on the socket are aligned with the contact pads on the card.

d. Spread the tabs apart; with downward pressure, rotate the card to 90°.

e. Press the card down firmly to make sure it is properly seated to the base unit.

f. Release the tabs to secure the card in place.

g. Repeat this procedure for all port and relay cards to be installed. Refer to Figure 13for an example of 4-port installation with relays.

h. When card installation is complete, ensure that all cards are uniformly spaced, allretainer tabs are properly locked and all cards are securely mounted and latched.

i. Remove any foreign objects from the unit, and replace the cover.



INSTALLREMOVE

SIMM SOCKET

PORT OR RELAY CARD

TAB

Figure 12. Card Installation and Removal

Figure 13 EDAC Configured for Four Ports with Relays



4.3 Removing Port and Relay Cards

CAUTION

Use static sensitive device precautions during handling and installation ofcomponents.

If removing the cards with the unit mounted, the cards can fall out of sockets oncethe retainer tabs are released.

WARNING

Do not try to force or pull on card to remove. Damage to card or socket couldresult.

a. Remove power from the unit.

b. If possible, dismount and lay the unit on a horizontal surface.

CAUTION

If power was just disconnected, components on the card may be hot. Allow theunit to cool for a few minutes.

c. To remove the card (see Figure 12) pull the tabs on the retainer outward until the cardis released. When the card releases, it will rotate toward the rear of the unit.

d. Once the card rotates, gently ease the card out of the socket. Do not drag the pads ofthe card on the contacts of the socket.

e. When the card is removed, place it back in the shipping container, if available, or inan anti-static container which will prevent the card from being damaged.



4.4 Setting DIP Switches

Set the DIP switches on the base unit to match the system environment, as indicated in thefollowing sections.

4.4.1 Nortel Systems

User configured DIP switches are accessible from the front of the unit. Switch selections are asfollows.

• Switch 1 selects between a PBX (M-1, SL-1 and SL-100) or the Norstar KSU.

• Switch 2 selects the software revision if the PBX is used. If the Norstar KSU is used,the setting of switch 2 should be OFF for µ-Law or ON for A-Law.

• Switch 3 selects between A-Law and µ-Law pulse code modulation (PCM) coding.µ-Law is used primarily in the United States, Canada and Japan. A-Law is used inother parts of the world. If the Norstar KSU is used, the setting of switch 3 should beOFF for µ-Law or ON for A-Law.

• Switch 4 selects between standard and T-1 trunks. T-1 trunks have echo suppressionwhich causes the EDAC to switch on and off during a conversation making the audiooutput sound choppy. When using the T-1 option, there will be an 8 second delayfollowing line release. The delay keeps the analog output active for 8 seconds after theline has been released.

Figure 14 represents the switch settings as shipped with all switches set by factory default to theOFF position. Table 6 identifies switch selections used with a Meridian PBX, including theEDAC/SR application. Table 7 identifies switch settings used with a Norstar.

- Top of EDAC front panel as shown in Figure 3.

Figure 14. User Configured DIP Switches (Nortel)

43

21

ON

Note: White designates ON. Black designates OFF.

1

2

3

4

Norstar

M-1 17.66

SL-1

Above

M-1 17.65

andB

elow

µ-Law

A-Law

No D

elay

8 Second

Delay

or

and

SL-100or

SL-1/

SL-100or

M-1



Table 6. Switch Settings for Nortel SL-1, SL-100 or M-1 Systems

CONFIGURATION SWITCH SETTINGPBX SOFTWARE LAW RELEASE 1 2 3 4

REVISION CODING DELAY*SL-1 µ-Law None OFF OFF OFF OFF

or µ-Law 8 Sec OFF OFF OFF ONSL-1 M-1 17.66 A-Law None OFF OFF ON OFF

SL-100 and Above A-Law 8 Sec OFF OFF ON ONor SL-100 µ-Law None OFF ON OFF OFF

M-1 or µ-Law 8 Sec OFF ON OFF ONM-1 17.65 A-Law None OFF ON ON OFFand Below A-Law 8 Sec OFF ON ON ON

* For systems connected to T-1 trunks, set Release Delay to 8 seconds so that echo suppressionwill not interfere with operation of the unit.

Table 7. Switch Settings for Nortel Norstar Systems

CONFIGURATION SWITCH SETTINGKSU LAW RELEASE 1 2 3 4

CODING DELAY*Norstar µ-Law None ON OFF OFF OFF

8 Sec ON OFF OFF ONA-law None ON ON ON OFF

8 Sec ON ON ON ON




4.4.2 NEC Systems


• Switches 1 and 2 should be set to OFF for use with NEC systems.

• Switch 3 selects between A-Law and µ-Law pulse code modulation (PCM) coding.µ-Law is used primarily in the United States, Canada and Japan. A-Law is used inother parts of the world.


Figure 15 represents the switch settings as shipped with all switches set by factory default to theOFF position. Table 8 identifies all switch selections for NEC systems.


Figure 15. User Configured DIP Switches (NEC)

43

21

ON


1

2

3

4

Reserved

µ-Law

A-Law

No D

elay

8 Second

Delay

All N

EC

System

sA

ll NE

CS

ystems

Reserved



Table 8. Switch Settings for NEC Systems

CONFIGURATION SWITCH SETTINGLAW CODING RELEASE 1 2 3 4

DELAY*µ-Law None OFF OFF OFF OFFµ-Law 8 Sec OFF OFF OFF ONA-Law None OFF OFF ON OFFA-Law 8 Sec OFF OFF ON ON


4.4.3 Aspect CallCenter


• Switch 1 should be set to OFF for use with the Aspect CallCenter.

• Switch 2 selects the PBX silence code. The default (OFF) sets the silence code to 7FHand will be valid for most installations. For older versions of the Aspect CallCenter,set the switch to ON, which will set the idle code to 00H.


• Switch 4 selects between standard and T-1 trunks. T-1 trunks have echo suppressionwhich causes the EDAC to switch on and off during a conversation, making the audiooutput sound choppy. When using the T-1 option, there will be an 8 second delayfollowing line release. The delay keeps the analog output active for 8 seconds after theline has been released.

Figure 16 represents the switch settings as shipped, with all switches set by factory default to theOFF position. Table 9 identifies all switch selections for the Aspect CallCenter.


Figure 16. User Configured DIP Switches (Aspect)

43

21

ON


1

2

3

4

Reserved

µ-Law

A-Law

Aspect

CallC

enter

Silence

Code =

00H

Silence

Code =

7FHN

o Delay

8 Second

Delay



Table 9. Switch Settings for Aspect CallCenter

CONFIGURATION SWITCH SETTINGS

SILENCE LAW RELEASE 1 2 3 4CODE CODING DELAY 7FH µ-Law None OFF OFF OFF OFF 7FH µ-Law 8 Sec OFF OFF OFF ON 7FH A-Law None OFF OFF ON OFF 7FH A-Law 8 Sec OFF OFF ON ON 00H µ-Law None OFF ON OFF OFF 00H µ-Law 8 Sec OFF ON OFF ON 00H A-Law None OFF ON ON OFF 00H A-Law 8 Sec OFF ON ON ON

4.4.4 Lucent Definity


• Switches 1 and 2 should be set to OFF for use with Lucent Definity.



Figure 17 represents the switch settings as shipped with all switches set by factory default to theOFF position. Table 10 identifies all switch selections for Lucent systems.


Figure 17. User Configured DIP Switches (Lucent Definity)

43

21

ON


1

2

3

4

Reserved

µ-Law

A-Law

No D

elay

8 Second

Delay

System

sS

ystems

Reserved

All Lucent

All Lucent



Table 10. Switch Settings for Lucent Definity

CONFIGURATION SWITCH SETTINGLAW CODING RELEASE 1 2 3 4

DELAY*µ-Law None OFF OFF OFF OFFµ-Law 8 Sec OFF OFF OFF ON

A-Law None OFF OFF ON OFFA-Law 8 Sec OFF OFF ON ON




4.5 Installing the EDAC Unit

4.5.1 Mounting

4.5.1.1 Wall Mounting

For wall mount installations, the EDAC must be attached to 3/8 inch (minimum) plywood usingstandard wood screws. It may be mounted flat or vertically, extending from the surface. Normalwall mounting applications are shown in Figure 18. For instructions on wall mounting withpower distribution, see section 4.5.1.3.

NOTE

Key shaped mounting holes must be at the top of the unit when wall mounting theEDAC.

EXTENDING FLAT

Figure 18. Recommended Wall Mounting

CAUTION

Do not mount the unit horizontally extending from the wall as shown in Figure19.

Figure 19. Non-Recommended Wall Mounting



4.5.1.2 Rack Mounting with Power Distribution

If rack mounting is preferred, the EDAC Power Distribution Panel (DTI P/N 500-1102-001) isused. Up to eight EDAC units and two power supplies can be mounted on one rack panel to acustomer-furnished 19 inch rack. When rack mounting, EDAC units install on the front of thePower Distribution Panel, and power supplies mount on the back. Using Figures 20 and 21 andTable 11 as guides, install as follows utilizing the hardware supplied with the Power DistributionPanel.

a. Mount Power Distribution Panel to either side (front or back) of rack.

b. Mount EDAC units on the front of the Power Distribution Panel.

c. Mount multi-unit power supplies to the back of Power Distribution Panel.

d. Connect one power supply output (P/S #1, 5-pin connector) to Power DistributionModule input A.

e. Connect one power supply output (P/S #2, 5-pin connector) to Power DistributionModule input B.

Figure 20. Front and Back View of Rack Mount Installation

19" RACK

BACK VIEW

FRONT VIEW

P/S

P/S #1

#2

1 2 3 4 5 6 7 8

INPUT FROM A/C POWER SOURCE

EDAC UNITS

INPUT FROM POWERDISTRIBUTION MODULE

DIN POWERCABLE (ENDWITH FERRITECORE MUST ATTACH TOEDAC.)

USE 500-1120-003 OR500-1120-005 POWERSUPPLY

POWER DISTRIBUTION PANEL (SEE FIGURE 13)

POWER DISTRIBUTION MODULE (SEE FIGURE 22)

OUTPUT TO POWER DISTRIBUTIONMODULE INPUT A

OUTPUT TO POWER DISTRIBUTIONMODULE INPUT B



Figure 21. Power Distribution Module

f. Connect DIN cables (Figure 22) according to chart in Table 11. Ferrite core end mustattach to EDAC.

g. Connect power supply AC cords to suitable AC power. DTI recommends the use of asurge suppressor.

(Both ends)Figure 22. DIN Power Cable

Table 11. DIN Power Cable Connections

FROM POWER DISTRIBUTION TO EDAC UNITDIN CABLE MODULE OUTPUT INPUT

1 A Out1 12 A Out2 2

3 A Out3 3

4 A Out4 45 B Out1 5

6 B Out2 67 B Out3 78 B Out4 8

Ferrite Core

Out

4

Out

1

Out

2

In

B

A

Input from Power Supplies

Output to EDAC Units

Out

3

Out

4

Out

1

Out

2

In Out

3

31

4

2

5



4.5.1.3 Wall Mounting with Power Distribution

It is also possible to wall mount multiple EDAC units and power supplies using the PowerDistribution Module (DTI P/N 500-1102-002). No minimum or maximum spacing betweenEDACs is required. Using Figures 21 and 23 and Table 11 as guides, install as follows.

a. Mount Power Distribution Module to wall.

b. Mount EDAC units according to section 4.5.1.1.

c. Mount multi-unit power supplies to wall.

d. Connect one power supply output (P/S #1, 5-pin connector) to Power DistributionModule input A.

e. Connect one power supply output (P/S #2, 5-pin connector) to Power DistributionModule input B.

f. Connect DIN cables (Figure 23) according to chart in Table 11. Ferrite core end mustattach to EDAC.

g. Connect power supply AC cords to suitable AC power. DTI recommends the use of asurge suppressor.

Figure 23. Wall Mount Installation with Power Distribution

P/S #1

1 2 3 4 5 6 7 8

OUTPUT FROM A/C POWER SOURCE

EDAC UNITS

INPUT FROM POWERDISTRIBUTION MODULE

DIN POWERCABLE (ENDWITH FERRITECORE MUST ATTACH TOEDAC.)

USE 500-1120-003 OR500-1120-005 POWERSUPPLY

OUTPUT TO POWER DISTRIBUTIONMODULE INPUT A

OUTPUT TO POWER DISTRIBUTIONMODULE INPUT B

POWER DISTRIBUTION MODULE (SEE FIGURE 22)

P/S #2



4.5.2 Cross Connecting the Digital Input

a. Plug a standard female RJ-21 (25-pair) cable connector (not supplied with the unit)into the front of the unit.

b. Using Table 12 and Figure 24 as guides, cross connect the required quantity of EDACdigital input pairs in parallel with the digital telephones to be monitored. The EDACdigital input is not polarity sensitive, so “Tip to Tip” or “Tip to Ring” can beconnected. Up to 12 digital telephones may be connected to the 25-pair connector ifrelay cards are not used or up to eight per connector if relay cards are required.

4.5.3 Cross Connecting the Analog Output

Cross connect the EDAC’s analog audio output pairs to the recording equipment’s analog inputpairs. Refer to Table 10 for the wiring pinouts and color codes. The analog outputs are notpolarity sensitive, so “Tip to Tip” or “Tip to Ring” may be connected.

4.5.4 Cross Connecting Relays

If relay cards are used, cross connect the relay contact pairs to the recording equipment contactclosure pairs. Refer to Table 10 RJ-21 (25-pair) Connector Pinout. The relay contact outputs arenot polarity sensitive, so “Tip to Tip” or “Tip to Ring” may be connected.

Figure 24. Typical Cross Connection Diagram forOne Base Unit with 12 Port Cards

EDAC

Cross Connect Blocks

12 Digital Ports

1

2

12

up toPBXor

KSU

25-pair cable(cannot exceed

30 feet)

12 Analog Pairs

NOTE All lines are 2-wire.



Table 12. RJ-21 (25-Pair) Connector Pinout

PAIR PAIR COLOR PINS SIGNAL1 wht-blu 1,26 Port 1 Digital Input Pair2 wht-org 2,27 Port 2 Digital Input Pair3 wht-grn 3,28 Port 3 Digital Input Pair4 wht-brn 4,29 Port 4 Digital Input Pair5 wht-slt 5,30 Port 5 Digital Input Pair6 red-blu 6,31 Port 6 Digital Input Pair7 red-org 7,32 Port 7 Digital Input Pair8 red-grn 8,33 Port 8 Digital Input Pair9 red-brn 9,34 Port 9 Digital Input Pair or Port 1 Relay Output Pair10 red-slt 10,35 Port 10 Digital Input Pair or Port 2 Relay Output Pair11 blk-blu 11,36 Port 11 Digital Input Pair or Port 3 Relay Output Pair12 blk-org 12,37 Port 12 Digital Input Pair or Port 4 Relay Output Pair13 blk-grn 13,38 Port 1 Analog Output Pair14 blk-brn 14,39 Port 2 Analog Output Pair15 blk-slt 15,40 Port 3 Analog Output Pair16 yel-blu 16,41 Port 4 Analog Output Pair17 yel-org 17,42 Port 5 Analog Output Pair18 yel-grn 18,43 Port 6 Analog Output Pair19 yel-brn 19,44 Port 7 Analog Output Pair20 yel-slt 20,45 Port 8 Analog Output Pair21 vio-blu 21,46 Port 9 Analog Output Pair or Port 5 Relay Output Pair22 vio-org 22,47 Port 10 Analog Output Pair or Port 6 Relay Output Pair23 vio-grn 23,48 Port 11 Analog Output Pair or Port 7 Relay Output Pair24 vio-brn 24,49 Port 12 Analog Output Pair or Port 8 Relay Output Pair25 vio-slt 25,50 Not Used

NOTE

Digital input pairs are not polarity sensitive. Pins 1 and 26 are just to the right ofthe power connector.



4.5.5 Connecting Power

NOTE

DTI recommends the use of surge suppressors.

WARNING!

Ferrite core end of the DIN power cable must connect to the EDAC to complywith CISPR 22.

4.5.5.1 Wall Mount

a. Plug the 5-pin power supply connector from the power supply into the 5-pin powerinput receptacle on the front of the EDAC unit. Refer to Figures 22-24.

b. Plug the power supply into a suitable AC power source.

4.5.5.2 Rack Mount/Wall Mount (Distributed Power)

a. Connect one 5-pin power supply connector from one power supply to PowerDistribution Module input A and the other to input B. Refer to Figures 21-23.

b. Connect DIN cables (DTI P/N 450-1102-001) from module outputs to EDAC units asneeded. The ferrite core end must connect to the EDAC (see Figure 23).

c. Connect the power supplies to a suitable AC power source.



5.0 Testing and Troubleshooting

5.1 Testing

Verify proper operation of the EDAC by observing the LED indicators. The green LEDs indicatethe unit is receiving power. The red LEDs indicate when a port is active. Positions which areempty or where relay cards are installed will not light. Indicators may light where port cards areinstalled but are not cross-connected. Refer to Figure 7 for a view of the LED indicator positions.

Test each port. Make test recordings on each port. LEDs should be on when a line is seized.LEDs should be off when a line is released.

NOTE

Some systems send idle code during dialing and when placing a call on hold, soLEDs will be off and there will be no audio output.

5.2 Troubleshooting

Tables 13, 14, 15, and 16 demonstrate some possible solutions to problems encountered whileusing the EDAC.

For additional assistance, please contact your distributor or Digital Techniques’ TechnicalSupport Department at (800) 383-2477 or (972) 727-1200.



Table 13. Troubleshooting Guide for Nortel Systems

PROBLEM / SYMPTOM POSSIBLE SOLUTIONNo Audio/No Analog Output Check power connections.

Green lamps are off. Try a power supply from another EDAC unit, if available.Lamps are dim. Check to see if red lamps follow hook activity.

If no, check input line connections. Check to see if port isenabled.If yes, check output recorder connections.

Check for improperly aligned or seated cards (see section5.2.1).If system uses relays:

Check cross connections to relays.Check to see if relay cards are in correct sockets.Listen for relays to close when telephone goes off-hook.

Audio Sounds Poor Check PBX selection (see switch 1, section 4.4.1).Output has a high pitched Check Law coding selection (see switch 3, section 4.4.1).squeal. Check trunk selection (see switch 4, section 4.4.1).DAC follows hook activity, Check for improperly aligned or seated cards (see sectionbut it sounds distorted. 5.2.1).Output sounds choppy. Check loop length (see section 3.8). Check tap length (cannot

exceed 30 feet).Check for line stubs (loose, non-terminated cables).Check port pad settings of PBX/KSU; AGC should be set to Nand level to ± 45.Check delay setting (see section 4.4.1).

Intermittence Check cross connections.Audio or lamps function Check power connections.intermittently. Try a power supply from another EDAC unit, if available.

Check to see if port cards are seated properly in SIMM sockets.Red lamps are always on. Check idle code selection (see switch 2, section 4.4.1).

Check input cross connections. Lamps will always be on whenthere is no input signal.

Phone does not work Verify EDAC unit still has power.(Norstar only).

Intermittence Verify that only single appearance lines areAudio or lamps function assigned to buttons 8 through 11 on the digital set.intermittently. (EDAC/SRonly).

No Audio/No Analog Output Verify exactly one Master port card is installed in the base unit(EDAC/SR only) at position JP1.



Table 14. Troubleshooting Guide for NEC Systems



If no, check input line connections. Check to see if port isenabled.If yes, check output recorder connections. Check forimproperly aligned or seated cards (see section 5.2.1).

If system uses relays:Check cross connections to relays.Check to see if relay cards are in correct sockets.Listen for relays to close when telephone goes off hook.

Audio Sounds Poor Check Law coding selection (see switch 3, section 4.4.2).Output has a high pitched Check trunk selection (see switch 4, section 4.4.2).squeal. Check for improperly aligned or seated cards (see sectionDAC follows hook 5.2.1).activity, but it sounds Check loop length (see section 3.8).distorted. Check tap length (cannot exceed 30 feet).Output sounds choppy. Check for line stubs (loose, non-terminated cables).

Check port pad settings of PBX/KSU.Check delay setting (see section 4.4.2).


Check to see if port cards are seated properly in SIMM sockets.Red lamps are always on. Check input cross connections. Lamps will always be on when

there is no input signal.



Table 15. Troubleshooting Guide for the Aspect CallCenter



If no, check input line connections. Check to see if port isenabled.If yes, check output recorder connections.

Check for improperly aligned or seated cards(see section 5.2.1).If system uses relays:

Check cross connections to relays.Check to see if relay cards are in correct sockets.Listen for relays to close when telephone goes off hook.

Audio Sounds Poor Check Law coding selection (see switch 3, section 4.4.3).Output has a high pitched Check for improperly aligned or seated cardssqueal. (see section 5.2.1).DAC follows hook Check loop length (see section 3.8).activity, but it sounds Check tap length (cannot exceed 30 feet).distorted. Check for line stubs (loose, non-terminated cables).Output sounds choppy Check port pad settings of PBX/KSU.



there is no input signal.Check silence code selection. (See switch 2, section 4.4.3)



Table 16. Troubleshooting Guide for Lucent Definity



If no, check input line connections. Check to see if port isenabled.If yes, check output recorder connections. Check forimproperly aligned or seated cards (see section 5.2.1).

If system uses relays:Check cross connections to relays.Check to see if relay cards are in correct sockets.Listen for relays to close when telephone goes off hook.

Verify exactly one master port card is installed in the base unitat position JP1.

Audio Sounds Poor Check Law coding selection (see switch 3, section 4.4.4).Output has a high pitched Check trunk selection (see switch 4, section 4.4.4).squeal. Check for improperly aligned or seated cards (see sectionDAC follows hook 5.2.1).activity, but it sounds Check loop length (see section 3.8).distorted. Check tap length (cannot exceed 30 feet).Output sounds choppy. Check for line stubs (loose, non-terminated cables).

Check port pad settings of PBX/KSU.Check delay setting (see section 4.4.4).



there is no input signal.



5.2.1 Checking for Improperly Aligned or Seated Cards

Use the following procedure to check cards for improper alignment and seating.

a. Remove power and 25-pair connector.

b. Dismount unit from wall or rack.

c. Remove cover.

CAUTION

If power was just disconnected, components on the card may be hot. Allow theunit to cool for a few minutes.

d. Inspect for improperly aligned or seated cards.



6.0 WARRANTY

Digital Techniques warrants to the original purchaser that this product will be free from defectsin material and workmanship for one year from date of purchase.

In the event of malfunction directly attributable to faulty workmanship or materials, DigitalTechniques will, at its option, repair or replace the defective product to whatever extent it shalldeem necessary to restore the product to proper operating condition, provided the purchasersends with the defective product proof of the date of purchase of the product. Please note thatDigital Techniques may replace the defective product with a unit of equal value, at the option ofDigital Techniques.

IMPORTANT

Before returning a product for repair, the customer must call Digital Techniquesfor a return authorization number. This number must be included along with thecustomer’s mailing address and telephone number when the product is returned.

During the first year, all labor and material will be provided without charge. DTI providesextended warranty contracts for parts and labor after the expiration of the initial warranty.

Units must be returned postage/freight prepaid. Units returned without proof of date of purchaseor out of warranty units will be repaired or replaced, and the customer will be charged for partsand labor.

The customer shall be solely responsible for the failure of any Digital Techniques’ productresulting from accident, abuse or misapplication of the product. Digital Techniques assumes noliability as a consequence of such events under the terms of this warranty.

This warranty is in lieu of all other express warranties which now or hereafter might otherwisearise with respect to this product.

expandable digital to analog convertor

Documents